Multiple, contiguous stripe, extrusion coating apparatus

• US 3,886,898 A
• Filed: 12/19/1973
• Issued: 06/03/1975
• Est. Priority Date: 12/19/1973
• Status: Expired due to Term

• Current Assignee: The Standard Register Company (Middleby Corporation)
• Original Assignee: Dunham Briggs Seeley, James Anthony Colegrove
• Inventors: Seeley, Dunham Briggs, Colegrove, James Anthony
• Primary Examiner(s): McIntosh, John P.
• Application Number:
  US05/426,022
• Time in Patent Office: 531 Days
• Field of Search: 118/410,411,412,413,407,415
• US Class Current: 118/411
• CPC Class Codes: B05C 11/10 Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material B05C1/0813, B05C5/0225, B05C17/002 and B05C19/06 take precedence
• CPC Class Codes: B05C 5/0279 independently, e.g. individually, flow controlled
• CPC Class Codes: B05C 9/06 for applying two different liquids or other fluent materials, or the same liquid or other fluent material twice, to the same side of the work

Abstract

Apparatus for coating moving webs comprising a stationary blocklike member or members provided with individual fluid introducing orifices connected to a fluid metering cavity within each blocklike member and wherein adjustable dam means are arranged adjacent to the face of the cavity opening to adjust the coating thickness and wherein individual separators are positioned adjacent to the contiguous faces of the block-like members so that a plurality of different materials may be simultaneously coated or applied to a moving web or material stock in parallel contiguous tracks without intermixing.

Claims

1. Apparatus, for continuously coating a plurality of stripes on to at least one surface of a sheet member, comprising:

at least two rigid block-like members, each said block-like member having upper and lower surfaces, one and other side surfaces and leading and trailing surfaces, each said block-like member having an opening therein which extends from said one side surface and along said trailing surface to said other side surface so as to form first and second apertures in said one and other side surfaces, respectively, and a third aperture in said trailing surface, said opening also extending from said third aperture angularly upward toward said upper and leading surfaces, said trailing surface including a generally convex surface portion extending from said lower surface to said third aperture, said convex surface portion also extending from said first aperture and along said trailing surface to said second aperture, said convex surface portion forming a lip at said third aperture, each block-like member also including at least one hole therein which extends from said upper surface to said opening and providing communication between said upper surface and said opening, each said hole being adapted for enabling coating material to enter said hole at said upper surface, enter said opening from said communicating hole and become discharged from said opening over said lip at said third aperture;

at least one relatively thin separator member located between each two of said block-like members so as to close said second and first apertures of said one and other side surfaces of said two block-like members, respectively, and to separate coating material in the opening of one block-like member from coating material in the opening of the other of said two block-like members, each said separator member also having an edge surface which is substantially flush with at least said lower surfaces of said two block-like members;

at least two rigid end frame members between which said at least two block-like member and intermediate separator member are secured, said first and second apertures of said one and other side surfaces of said two block-like members, respectively, being closed by one and the other, respectively, of said end frame members;

at least two rigid block-like dam members, each having upper and lower surfaces, one and other side surfaces and leading and trailing surfaces, each dam member being associated with a different block-like member such that the leading surface of a dam member abuts a trailing surface of a block-like member, each dam member including a generally convex surface portion between its lower surface and its leading surface, the convex surface portions of each block-like member and each dam member associated therewith being spaced-apart to define a gap through which the coating material may be discharged from said opening in said block-like member, said convex surface portion of said dam member extending for a short distance beyond said gap and lip in a direction away from the trailing surface of said block-like member and toward the trailing surface of said dam member;

means associated with each dam member and the block-like member associated with said dam member for adjusting the vertical position of said dam member relative to said associated blocklike member so that the size of said gap may be selectively varied;

a backing member mounted beneath the lower surfaces and flush edge surfaces of said block-like members and separator members, respectively, and spaced-apArt from said surfaces by a distance to form a passage sufficient to receive said sheet to be coated so that said sheet is sandwiched between said backing member and said lower surfaces and flush edge surfaces of said block-like members and said separator members, respectively, said sheet being slidable in a direction from said leading surfaces toward said trailing surfaces so that coating materials from each said opening may discharge through said gaps as well as under said extending convex portions of said dam members on to a surface of said sheet in order to form stripes of said coating materials on said surface of said sheet as said sheet is slidably moved, said separator members enabling the discharging coating materials from said openings to form wet seals thereat on said sheet and parallel, stripes of said materials on said sheet so that each said stripe have straight edges; and

a support member for said backing member.

2. The apparatus set forth in claim 1 wherein said edge surfaces of said separator members enable the discharging coating materials to form wet seals between said stripes, said stripes being in parallel, contiguous relationship.